Method for producing cleaning member, and system for producing cleaning member

Patent metadata

Field	Value
Publication number	US-10568484-B2
Application number	US-201816055955-A
Country	US
Kind code	B2
Filing date	Aug 6, 2018
Priority date	Dec 29, 2012
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

A method for continuously producing a cleaning member obtained from a multilayer web that includes at least a fiber bundle with hollow fibers, and non-woven fabric strips includes at least: a step for preparing a guide member provided with a pair of width-adjusting member, and having a predetermined interval; a step for conveying a fiber bundle strip, such as the fiber bundle with hollow fibers, between the pair of width-adjusting members of the guide member, and adjusting the width of the fiber bundle strip so as to match the aforementioned interval; a step for forming the multilayer web by overlaying the strip-like fiber bundle, the width of which has been adjusted, on the non-woven fabric strips; and a step for joining the components of the multilayer web.

First claim

The invention claimed is:

1. A system for continuously producing a cleaning member that is obtained from a multi-layer web containing at least a belt-shaped fiber bundle and a belt-shaped nonwoven fabric, the belt-shaped fiber bundle comprising an opened fiber bundle, the system comprising:
a device provided with a guide member comprising a pair of width-adjusting members having a predetermined spacing therebetween for adjusting a width of the belt-shaped fiber bundle,
a device for forming the multi-layer web by stacking the width-adjusted belt-shaped fiber bundle on the belt-shaped nonwoven fabric, and
a device for connecting the stacked belt-shaped fiber bundle and belt-shaped nonwoven fabric of the multi-layer web,
wherein
each width-adjusting member of the pair of width-adjusting members has an upper end, a lower end, and a contact area, and
has a rod shape in an axial direction crossing a machine direction of the belt-shaped fiber bundle,

the system further comprises a device for conveying the belt-shaped fiber bundle, in the machine direction, through the pair of width-adjusting members while sides of the belt-shaped fiber bundle are in contact with the contact areas of the pair of width-adjusting members so as to reduce the width of the belt-shaped fiber bundle to coincide with the predetermined spacing between the pair of width-adjusting members,
in each width-adjusting member of the pair of the width-adjusting members, the upper end is located at an upstream side relative to the lower end in the machine direction,
the guide member further includes a supporting member connecting the lower end of one of the width-adjusting members to the lower end of the other width-adjusting member, and
the device for conveying is configured to convey the belt-shaped fiber bundle on the supporting member.

2. The system according to claim 1 , wherein
each width-adjusting member of the pair of width-adjusting members has curved surface parts configured to be in contact with the sides of the belt-shaped fiber bundle.

3. The system according to claim 1 , wherein
the guide member further includes a height-adjusting member that connects the upper end of one of the width-adjusting members to the upper end of the other width-adjusting member.

4. The system according to claim 1 , further comprising a device for cutting the multi-layer web into individual cleaning members.

5. The system according to claim 1 , wherein
the guide member further includes a height-adjusting member that connects the upper end of one of the width-adjusting members with the upper end of the other width-adjusting member, and
the height-adjusting member is configured to control the belt-shaped fiber bundle not to exceed a height of the height-adjusting member.

Assignees

• Unicharm Corp

Inventors

• Takahashi Shigetomo
• Goto Hiroaki
• Matsumoto Takayuki
• Yamashita Yuji

Classifications

• B65H57/02

  Stationary rods or plates · CPC title

• B65H57/26

  Supports for guides · CPC title

• A47L13/16 Primary

  Cloths; Pads; Sponges (metal scraping sponges A47L13/07) · CPC title

• D02J1/18

  Separating or spreading · CPC title

• B29C65/18

  using heated tools · CPC title